exercise 15 lab exam 2

what is action of serratus anterior muscle

abducts scapula

four muscles that extend the vertebral column

multifidus, spinalis, longissimus, iliocostalis

how does the serratus anterior function as an antagonist to the rhomboideus muscles

the serratus anterior abducts the scapula, the rhomboideus adducts it

how does the action of the rectus abdominis differ from the other abdominal muscles

it flexes the vertebral column

what is the physical relationship of the intercostal muscles to each other

the internal intercostals are deep and the external intercostals are superficial

extension and rotation of the vertebral column occur by which group of muscles

erector spinae

what is the action of the intercostal muslces

external intercostal elevates, internal depresses ribs, inspiration and expiration

what muscles insert on the central tendon

diaphragm

the tendinous intersections occur on which muscle

rectus abdominis

which is deepest abdominal muscle

transverse abdominis

what is action of quadratus lumborum

laterally flexes vertebral column, depresses rib 12

which two muscles originate on neck and extend and rotate head

semispinalis, spinalis

how do the abdominal muscles in the cat compare with those in the human in terms of position?

same relative position but the rectus abdominis of cat is ventral not anterioir bc they are quadropeds (have four legs)